- Require authentication on cameras and media servers.
- Keep IP cameras and recorders off the Internet; use a VPN for remote viewing.
- Update device firmware.
Port 3925: Zoran Media Port
Port 3925 is assigned by IANA to zmp (Zoran Media Port).
3925
How zmp works
Media & streamingThe device streams video frames over port 3925, continuously, as they are captured.
- Transport
- TCP · UDP
- Exposure risk
- not rated depends on the program listening
- Encryption
- Unknownnot stated by the registry
- IANA status
- Assigned1 registered service
- Range
- Registered (1024-49151)
- Category
- Media & streaming
Is port 3925 dangerous?
We have no specific security note for port 3925. Its risk depends on the program actually listening on it. General advice for media & streaming services:
IANA registry entries for port 3925
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| zmp | 3925 | TCP, UDP | Zoran Media Port | - | 2003-11 |
// source: IANA service name and port number registry
Which program uses port 3925, and is it reachable?
Linux
sudo ss -ltnup 'sport = :3925' # process listening on 3925
sudo lsof -nP -i :3925macOS
sudo lsof -nP -i :3925
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3925 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 3925 netstat -ano | findstr :3925
From another machine
nmap -p 3925 -sV <host> sudo nmap -sU -p 3925 <host> nc -zv <host> 3925
Block it in the firewall
sudo ufw deny 3925/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 3925" -Direction Inbound -LocalPort 3925 -Protocol TCP -Action Block # Windows
What is port 3925 used for?
Port 3925 is assigned by IANA to zmp (Zoran Media Port).
Is port 3925 TCP or UDP?
Port 3925 is registered for TCP and UDP.
Is it safe to open port 3925?
It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Require authentication on cameras and media servers.
How do I check if port 3925 is open?
On Linux run "ss -ltnup 'sport = :3925'", on macOS "lsof -nP -i :3925", and on Windows "netstat -ano | findstr :3925" to see the local process. From another machine, "nmap -p 3925 <host>" shows whether it is reachable.